Answer:
f(1) = -4
Step-by-step explanation:
Given that,
f(x) = 2x-6
We need to find the value of f(1).
Put x = 1 in the above expression.
f(1) = 2(1)-6
= 2-6
= -4
So, the value of f(1) is equal to -4.
Answer:
1: 94
2:30
3: dont know
Step-by-step explanation:
1) y= -5
2) m = -1
3) k = 3
4) y = -5
Step-by-step explanation:
1) 
Solving:
2) ![8(-1+m)+3 = 2 [m-5 1/2]\\](https://tex.z-dn.net/?f=8%28-1%2Bm%29%2B3%20%3D%202%20%5Bm-5%201%2F2%5D%5C%5C)
Solving:
![8(-1+m)+3 = 2 [m-5 \frac{1}{2} ]\\-8+8m+3=2 [m-\frac{11}{2} ]\\8m-5=2 [\frac{2m-11}{2} ]\\8m-5=2m-11\\Combining\,\,like\,\,terms:\\8m-2m=-11+5\\6m=-6\\m=-6/6\\m=-1](https://tex.z-dn.net/?f=8%28-1%2Bm%29%2B3%20%3D%202%20%5Bm-5%20%5Cfrac%7B1%7D%7B2%7D%20%5D%5C%5C-8%2B8m%2B3%3D2%20%5Bm-%5Cfrac%7B11%7D%7B2%7D%20%5D%5C%5C8m-5%3D2%20%5B%5Cfrac%7B2m-11%7D%7B2%7D%20%5D%5C%5C8m-5%3D2m-11%5C%5CCombining%5C%2C%5C%2Clike%5C%2C%5C%2Cterms%3A%5C%5C8m-2m%3D-11%2B5%5C%5C6m%3D-6%5C%5Cm%3D-6%2F6%5C%5Cm%3D-1)
3) 
(Note: Considering 8(12-k)=3(k+21) instead of 8(12-k)=3(k=k+21))
Solving:
4) 
Solving:
Keywords: Solve for variables.
Learn more about Solve for variables at:
#learnwithBrainly
Answer: WHAT IS IT
Step-by-step explanation:
All except coordinates (-1, 3)
isolate the y
Add 4y to both sides
3x - 4y+ 4y = 9 + 4y
3x=9 + 4y
subtract 9 from both sides
3x-9= 9-9 + 4y
3x-9=4y
divide both sides by 4
3/4(x)= 4/4(y)
3/4(x) = y
solve for y by substituting (0) for x variable.
and add this to the equation above
y= 3/4(x) - 9/4
when x = 0, y = -9/4
when x= 1, y= -6/4 or -3/2
when x = 2/3, y= -7/4
when x = -1, y= -3
when x = -5, y= -24/4 or -6
